CN212612906U - Prefabricated assembled escape canal - Google Patents
Prefabricated assembled escape canal Download PDFInfo
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- CN212612906U CN212612906U CN202021241753.9U CN202021241753U CN212612906U CN 212612906 U CN212612906 U CN 212612906U CN 202021241753 U CN202021241753 U CN 202021241753U CN 212612906 U CN212612906 U CN 212612906U
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Abstract
The utility model discloses a prefabricated assembly type drainage ditch, which comprises a plurality of prefabricated ditch bodies which are connected in sequence and a ditch cover plate which is covered on the top of the corresponding ditch body, wherein the ditch body is internally provided with a diversion trench along the length direction; one end of the groove body in the length direction is concavely provided with a U-shaped clamping groove around the end surface of the groove body, and the other end of the groove body is outwards convexly provided with a clamping block matched with the clamping groove in shape; the adjacent two groove bodies are connected by the clamping grooves at the end parts of the groove bodies and the clamping blocks in a clamping and embedding fit manner; the device also comprises a reinforcing mechanism; the reinforcing mechanism comprises a hinge and a lock body, and the hinge and the lock body are respectively positioned on the outer side surface of the groove body at the joint of two adjacent groove bodies and are fixed on the outer wall of the groove body; one side of the hinge is fixed on the outer wall of the groove body, and the other side of the hinge is provided with a lock catch with a lock hole; after two adjacent groove bodies are spliced, the lock catch on the hinge is buckled and hung on the lock body on the outer wall of the same side of the adjacent groove bodies through the lock hole. The utility model discloses can lay fast and form the escape canal, can prevent moreover that the seepage phenomenon from appearing in the connection position of the ditch body.
Description
Technical Field
The utility model relates to a escape canal technical field, concretely relates to prefabricated assembled escape canal.
Background
The prefabricated concrete structure adopts an industrialized production mode, is greatly concerned and promoted in China, and has the advantages of high quality, short construction period, high comprehensive benefit and the like compared with the traditional process. With the research and popularization of prefabricated concrete structures, more and more engineering structures at home and abroad select and apply a prefabricated assembly technology.
For example, in the drainage ditch field, some construction sites adopt a prefabricated assembled drainage ditch mode for construction, for example, a patent with the patent number of 201720314355.7 discloses an assembled prefabricated drainage ditch component with double waterproof functions, wherein one end of the component is an inner concave clamping groove, and the other end of the component is an inner convex groove; wherein, the indent draw-in groove sets up the seal ring, and the bulge of tongue end has set up little recess again for plaster, waterproof mortar promptly. The advantage of this structure can directly be assembled, water-proof effects is better, its shortcoming is that the lateral displacement of both sides when the seal ring only can guarantee the concatenation of escape canal subassembly, it is sealed effectual in the lateral direction, but can not guarantee two rows of ditch butt joint back escape canal axial direction's axial displacement, the condition that becomes flexible appears in two rows of ditch joint portions easily, consequently the connection position after current pin-connected panel ditch body is assembled is after using a period, the condition of water seepage is very easily taken place to the connection position of the ditch body. Therefore, the need for a prefabricated assembled drainage ditch with good sealing effect is particularly important.
SUMMERY OF THE UTILITY MODEL
To the not enough of above-mentioned prior art, the utility model aims to solve the technical problem that: the utility model provides a prefabricated assembly type escape canal, can lay fast and form the escape canal, can prevent moreover that the seepage phenomenon from appearing in the connection position of the ditch body.
In order to solve the technical problem, the utility model discloses a following technical scheme:
a prefabricated assembly type drainage ditch comprises a plurality of prefabricated ditch bodies which are connected in sequence and a ditch cover plate which covers the tops of the corresponding ditch bodies, wherein a diversion trench is arranged in each ditch body along the length direction of the ditch body; one end of the groove body in the length direction is concavely provided with a U-shaped clamping groove around the end surface of the groove body, and the other end of the groove body is outwards convexly provided with a clamping block matched with the clamping groove in shape; the adjacent two groove bodies are connected by the clamping grooves at the end parts of the groove bodies and the clamping blocks in a clamping and embedding fit manner; the reinforcing mechanism is arranged on the left outer side wall and the right outer side wall of the ditch body in the length direction and used for locking and clamping the two adjacent ditch bodies; the reinforcing mechanism comprises a hinge and a lock body, and the hinge and the lock body are respectively positioned on the outer side surface of the groove body at the joint of two adjacent groove bodies and are fixed on the outer wall of the groove body; one side of the hinge is fixed on the outer wall of the groove body, and the other side of the hinge is provided with a lock catch with a lock hole; after two adjacent ditch bodies are spliced, the lock catch on the hinge is hung on the lock body on the outer wall of the same side of the adjacent ditch body through the lock hole so as to realize the reinforcement of the two adjacent ditch bodies.
The utility model discloses in the implementation, this ditch body can be prefabricated in advance or at the prefabricated shaping of mill at the prefabrication factory of job site, directly transports to the field assembly. Specifically, when the drainage ditch is actually assembled, the drainage ditch can be directly installed on hardened ground to form an open drainage ditch, or drainage ditches can be dug in the road surface, and the ditch body is installed in the ditches for dark drainage. In the present embodiment, the groove body assembly is performed in the gullies. Specifically, during assembly, a crane or a worker is used for horizontally laying one ditch body in a drainage ditch, then when the next ditch body is laid, a clamping block at the end part of the next ditch body is in clamping and embedding fit with a clamping groove at the end part of the laid ditch body, so that two adjacent ditch bodies are spliced together, then reinforcing mechanisms on two sides of the outer wall of the ditch body are installed, the worker turns over one side of a lock catch on a hinge, then the lock catch is buckled and hung on a lock body on the same side of the adjacent ditch body through a lock hole, the two adjacent ditch bodies are connected in the axial direction, the two ditch bodies cannot move in the axial direction, and then the process is repeated, so that the drainage ditch is assembled. The installation between two adjacent ditch bodies is very convenient, has guaranteed the leakproofness between adjacent ditch body, when the ditch body of a section length has been installed, alright carry out laying of ditch cover board, avoid the line construction of disposable ditch body too long, influence its wholeness.
The utility model discloses in, through fixture block and draw-in groove inlay card cooperation between two adjacent ditch bodies, make assembling of two ditch bodies simple, connect more firmly, the wholeness is stronger. More importantly, through the reinforcement mechanism who sets up on the ditch body, reinforcement mechanism can make the displacement volume at the axial direction between two ditch bodies obtain spacingly through the cooperation relation of hasp and lock body after fixture block and the draw-in groove butt joint of adjacent ditch body, has improved the sealing performance in escape canal, prevents that the seepage phenomenon from taking place in the escape canal use.
As an optimization, the reinforcing mechanism further comprises a clamping mechanism which is arranged on the lock body and used for providing clamping force for the two adjacent groove bodies, the clamping mechanism comprises a wedge-shaped block and a spring, an accommodating groove for accommodating the wedge-shaped block is formed in the side surface of the lock body, which is far away from the hinge connected with the lock body, one end of the spring is fixed at the bottom of the accommodating groove, and the other end of the spring is fixedly connected with the bottom of the wedge-shaped block; the wedge surface of the wedge block is back to the side surface of the groove body; the wedge-shaped block is also provided with a limit groove for positioning the lock catch; under the natural state of the spring, the wedge-shaped block protrudes out of the accommodating groove; when the lock catch is buckled and hung on the lock body through the lock hole, the lock catch continuously slides on the wedge-shaped surface to extrude the wedge-shaped block into the accommodating groove so that the spring is compressed and the lock catch is clamped in the limiting groove when the lock catch is buckled and hung in place.
Therefore, because the two groove bodies have installation errors during installation, the size of the lock hole on the lock catch is generally larger than that of the lock body, and the situation that the two adjacent groove bodies are not tightly connected can occur; and because the ditch body is under the effect of water impact for a long time and may face the risk of local settlement of the foundation, the joint of the end parts of the two ditch bodies is easy to generate a gap, thereby generating the water leakage phenomenon. Therefore, the clamping mechanism arranged on the lock body provides axial clamping force for the two adjacent groove bodies, so that the two adjacent groove bodies are always kept in tight connection. Through the elasticity that utilizes the spring and the cooperation of wedge, work as when the hasp is detained through the lockhole and is hung on the lock body, the hasp extrudees the wedge toward the storage tank in through constantly sliding on the wedge, makes the spring compressed and hasp card when detaining to hang in place at the spacing inslot, and the spring is in compression state, and the elastic restoring force of spring makes two ditch bodies remain throughout and presss from both sides tight state to guarantee the stability and the leakproofness at the connection position of two ditch bodies. Then the ditch body is when dismantling, and is also very simple, only need press the wedge, makes the spacing groove on hasp and the wedge break away from, alright accomplish the unblock between two adjacent ditch bodies.
Preferably, a rubber water stop is arranged on the U-shaped inner side wall of the clamping groove, so that the joint of the two connected groove bodies is sealed through the rubber water stop.
Like this, through set up rubber waterstop in the groove body tip draw-in groove, because rubber waterstop has certain deformability, when fixture block and draw-in groove joint, firstly rubber waterstop self takes place to warp, can fill up the gap between fixture block and the draw-in groove, secondly can produce certain reaction force between fixture block and draw-in groove after the rubber waterstop warp to press from both sides tightly the side direction to groove body tip, thereby the water of ditch internal flow is difficult for leaking from the gap between draw-in groove and the fixture block.
Preferably, the trench cover plate is provided with strip-shaped drain holes along the width direction, and the drain holes are arranged in parallel along the length direction of the trench cover plate at intervals.
Therefore, the drainage holes with multiple rows of long strips are formed in the trench cover plate, so that the diversion and dredging capacity of the trench cover plate for external rainwater is improved.
Preferably, the two sides of the top of the groove body are respectively fixed with an inverted L-shaped clamping plate which is integrally prefabricated and formed, and the clamping plates extend to the two ends along the length direction of the groove body; the horizontal parts of the clamping plates on the left side and the right side of the top of the groove body are oppositely arranged, so that the two clamping plates and the horizontal end surface of the top of the groove body jointly form a sliding groove for the sliding of the groove cover plate and the limiting of the groove cover plate; notches matched with the clamping plates in shape are also formed in the two sides of the groove cover plate along the length direction of the groove cover plate, so that the groove cover plate is in sliding fit with the sliding grooves in the top surface of the groove body through the notches, and the horizontal part of the clamping plates vertically limits the groove cover plate; the top surface of the trench cover plate is flush with the top surface of the horizontal part of the clamping plate.
Like this, through the cardboard at ditch body top integrated into one piece, ditch cover plate slidable mounting is behind the ditch body top surface like this, under the effect that blocks of cardboard horizontal part, can restrict the vertical ascending displacement of ditch cover plate to make the ditch cover plate difficult by tumbling, improved the security, but also have certain theftproof effect. And the top surface of the ditch cover plate is flush with the top surface of the clamping plate, so that the flatness of the top surface of the drainage ditch cannot be influenced, pedestrians cannot fall down easily, and the ditch cover plate is attractive.
To sum up, the beneficial effects of the utility model reside in that: the adjacent two ditch bodies are in embedded fit through the clamping blocks and the clamping grooves, so that the two ditch bodies are simple to assemble, firmer in connection and stronger in integrity. More importantly, through the reinforcement mechanism who sets up on the ditch body, reinforcement mechanism can make the displacement volume at the axial direction between two ditch bodies obtain spacingly through the cooperation relation of hasp and lock body after fixture block and the draw-in groove butt joint of adjacent ditch body, has improved the sealing performance in escape canal, prevents that the seepage phenomenon from taking place in the escape canal use.
Drawings
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, in which:
fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a side view of the two trench body junction of FIG. 1;
figure 3 is a cross-sectional view of the shackle of figure 2 mated with the lock body.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Reference numerals in the drawings of the specification include: the lock comprises a groove body 1, a groove cover plate 2, a diversion trench 3, a clamping plate 5, a hinge 6, a lock body 7, a spring 8, a wedge-shaped block 9, a limiting groove 10, a lock catch 11, a drain hole 12, a clamping groove 13 and a clamping block 14.
A prefabricated drainage ditch in this embodiment, as shown in fig. 1, 2 and 3, comprises a plurality of prefabricated ditch bodies 1 connected in sequence, and a ditch cover plate 2 covering the top of the corresponding ditch body 1, wherein a diversion trench 3 is arranged in the ditch body 1 along the length direction thereof; one end of the groove body 1 in the length direction is concavely provided with a U-shaped clamping groove 13 around the end surface, and the other end of the groove body is outwards convexly provided with a clamping block 14 matched with the clamping groove 13 in shape; the two adjacent groove bodies 1 are connected by the clamping fit of the clamping groove 13 and the clamping block 14 at the end part of the groove body 1; the device also comprises reinforcing mechanisms which are arranged on the left outer side wall and the right outer side wall of the groove body 1 in the length direction and are used for locking and clamping the two adjacent groove bodies 1; the reinforcing mechanism comprises a hinge 6 and a lock body 7, wherein the hinge 6 and the lock body 7 are respectively positioned on the outer side surface of the ditch body 1 at the joint of two adjacent ditch bodies 1 and fixed on the outer wall of the ditch body 1; one side of the hinge 6 is fixed on the outer wall of the ditch body 1, and the other side is provided with a lock catch 11 with a lock hole; after the adjacent two ditch bodies 1 are spliced, the lock catch 11 on the hinge 6 is buckled and hung on the lock body 7 on the outer wall of the same side of the adjacent ditch body 1 through the lock hole so as to realize the reinforcement of the adjacent two ditch bodies 1.
The utility model discloses in the implementation, this ditch body 1 can be prefabricated in advance or at the prefabricated shaping of mill at the prefabrication factory of job site, directly transports to the field assembly. Specifically, when the drainage ditch is actually assembled, the drainage ditch can be directly installed on the hardened ground to form an open drainage ditch, or drainage ditches can be dug in the road surface, and the ditch body 1 is installed in the ditches to perform dark drainage. In the present embodiment, the groove body 1 is assembled in the gully. Specifically, during assembly, a crane or a worker is used for horizontally laying one ditch body in a drainage ditch, then when the next ditch body is laid, the clamping block 14 at the end part of the next ditch body is in clamping fit with the clamping groove 13 already laid with the end part of the ditch body, so that two adjacent ditch bodies are spliced together, then reinforcing mechanisms on two sides of the outer wall of the ditch body are installed, the worker turns over one surface of the lock catch 11 on the hinge 6, then the lock catch 11 is buckled and hung on the lock bodies 7 on the same side of the adjacent ditch bodies through the lock hole, the two adjacent ditch bodies are connected in the axial direction, the two ditch bodies cannot move in the axial direction, and then the process is repeated, so that the drainage ditch is assembled. The installation between two adjacent ditch bodies 1 is very convenient, has guaranteed the leakproofness between adjacent ditch body, when the ditch body of a section length has been installed, alright carry out laying of ditch cover plate 2, avoid the line construction of disposable ditch body too long, influence its wholeness.
The utility model discloses in, through fixture block 14 and draw-in groove 13 inlay card cooperation between two adjacent ditch bodies 1, make two ditch body 1 assemble simply, connect more firmly, the wholeness is stronger. More importantly, through the reinforcing mechanism who sets up on the ditch body, reinforcing mechanism can make the displacement volume at the axial direction between two ditch bodies obtain spacingly through the cooperation relation of hasp 11 and lock body 7 after fixture block 14 and the draw-in groove 13 butt joint of adjacent ditch body, has improved the sealing performance in escape canal, prevents that the seepage phenomenon from taking place in the escape canal use.
In a specific implementation manner, the reinforcing mechanism further comprises a clamping mechanism which is arranged on the lock body 7 and used for providing clamping force for two adjacent groove bodies, the clamping mechanism comprises a wedge-shaped block 9 and a spring 8, an accommodating groove for accommodating the wedge-shaped block 9 is formed in the side surface of the lock body 7, which is far away from the hinge 6 connected with the lock body, one end of the spring 8 is fixed at the bottom of the accommodating groove, and the other end of the spring 8 is fixedly connected with the bottom of the wedge-shaped block 9; the wedge surface of the wedge block 9 faces back to the side surface of the groove body; the wedge-shaped block 9 is also provided with a limit groove 10 for positioning the lock catch 11; under the natural state of the spring 8, the wedge-shaped block 9 protrudes out of the accommodating groove; when the lock catch 11 is buckled and hung on the lock body 7 through the lock hole, the lock catch 11 continuously slides on the wedge-shaped surface to extrude the wedge-shaped block into the accommodating groove so that the spring 8 is compressed and the lock catch 11 is clamped in the limiting groove 10 when the lock catch is buckled and hung in place.
Thus, because the two groove bodies have installation errors during installation, the size of the lock hole on the lock catch 11 is generally larger than that of the lock body 7, and the situation that the connection between the two adjacent groove bodies is not tight enough exists; and because the ditch body is under the effect of water impact for a long time and may face the risk of local settlement of the foundation, the joint of the end parts of the two ditch bodies is easy to generate a gap, thereby generating the water leakage phenomenon. Therefore, the clamping mechanism arranged on the lock body 7 provides axial clamping force for the two adjacent groove bodies, so that the two adjacent groove bodies are always kept in tight connection. Through the elasticity that utilizes spring 8 and the cooperation of wedge 9, work as when hasp 11 is detained through the lockhole and is hung on lock body 7, hasp 11 is through constantly sliding on the wedge and extrudeing the wedge toward the storage tank in, makes spring 8 compressed and hasp 11 card when the knot is hung to the target in place in spacing groove 10, and spring 8 is in compression state, and spring 8's elastic restoring force makes two ditch bodies remain clamping state all the time to guarantee the stability and the leakproofness at the connection position of two ditch bodies. Then when the ditch body is dismantled, it is also very simple, only need press wedge 9, make hasp 11 break away from with spacing groove 10 on the wedge 9, alright accomplish the unblock between two adjacent ditch bodies.
In a specific embodiment, a rubber water stop is arranged on the U-shaped inner side wall of the clamping groove 13, so that the joint of the two connected groove bodies is sealed by the rubber water stop.
Like this, through set up the rubber waterstop in groove end portion draw-in groove 13, because the rubber waterstop has certain deformability, when fixture block 14 and draw-in groove 13 joint, firstly the rubber waterstop self takes place to warp, can fill up the gap between fixture block 14 and draw-in groove 13, secondly can produce certain reaction force to between fixture block 14 and draw-in groove 13 after the rubber waterstop warp, thereby press from both sides tightly the side direction of groove end portion, thereby the internal water that flows of ditch is difficult for leaking out from the gap between draw-in groove 13 and the fixture block 14.
In the specific embodiment, the trench cover 2 is provided with a strip-shaped drain hole 12 along the width direction, and a plurality of drain holes 12 are arranged in parallel along the length direction of the trench cover 2 at intervals.
Thus, the drainage holes 12 with multiple rows of long strips are arranged on the trench cover plate 2, so that the diversion and dredging capability of the trench cover plate 2 to external rainwater is improved.
In the specific implementation process, two sides of the top of the trench body are respectively fixed with an inverted L-shaped clamping plate 5 which is integrally prefabricated and formed, and the clamping plates 5 extend to two ends along the length direction of the trench body; the horizontal parts of the clamping plates 5 on the left side and the right side of the top of the groove body are oppositely arranged, so that the two clamping plates 5 and the horizontal end surface of the top of the groove body jointly form a sliding groove for the groove cover plate 2 to slide and limit; notches matched with the clamping plates 5 in shape are also formed in the two sides of the groove cover plate 2 along the length direction of the groove cover plate, so that the groove cover plate 2 is in sliding fit with the sliding grooves in the top surface of the groove body through the notches, and the horizontal parts of the clamping plates 5 limit the groove cover plate 2 in the vertical direction; the top surface of the trench cover plate 2 is flush with the top surface of the horizontal part of the clamping plate 5.
Like this, through cardboard 5 at ditch body top integrated into one piece, like this ditch cover plate 2 slidable mounting is behind the ditch body top surface, under the effect of blockking of cardboard 5 horizontal part, can restrict 2 vertical ascending displacements of ditch cover plate to make ditch cover plate 2 be difficult for being tumbled, improved the security, but also have certain theftproof effect. And 2 top surfaces of the ditch cover plate are flush with the top surface of the clamping plate 5, so that the flatness of the top surface of the drainage ditch cannot be influenced, pedestrians cannot fall down easily, and the ditch cover plate is attractive.
Finally, it is noted that the above-mentioned embodiments illustrate rather than limit the invention, and that, while the invention has been described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (5)
1. A prefabricated assembly type drainage ditch comprises a plurality of prefabricated ditch bodies which are connected in sequence and a ditch cover plate which covers the tops of the corresponding ditch bodies, wherein a diversion trench is arranged in each ditch body along the length direction of the ditch body; the method is characterized in that: one end of the groove body in the length direction is concavely provided with a U-shaped clamping groove around the end surface of the groove body, and the other end of the groove body is outwards convexly provided with a clamping block matched with the clamping groove in shape; the adjacent two groove bodies are connected by the clamping grooves at the end parts of the groove bodies and the clamping blocks in a clamping and embedding fit manner; the reinforcing mechanism is arranged on the left outer side wall and the right outer side wall of the ditch body in the length direction and used for locking and clamping the two adjacent ditch bodies;
the reinforcing mechanism comprises a hinge and a lock body, and the hinge and the lock body are respectively positioned on the outer side surface of the groove body at the joint of two adjacent groove bodies and are fixed on the outer wall of the groove body; one side of the hinge is fixed on the outer wall of the groove body, and the other side of the hinge is provided with a lock catch with a lock hole; after two adjacent ditch bodies are spliced, the lock catch on the hinge is hung on the lock body on the outer wall of the same side of the adjacent ditch body through the lock hole so as to realize the reinforcement of the two adjacent ditch bodies.
2. The prefabricated drain of claim 1, wherein: the reinforcing mechanism further comprises a clamping mechanism which is arranged on the lock body and used for providing clamping force for two adjacent groove bodies, the clamping mechanism comprises a wedge-shaped block and a spring, an accommodating groove for accommodating the wedge-shaped block is formed in the side surface of the lock body, which is far away from the hinge connected with the lock body, one end of the spring is fixed at the bottom of the accommodating groove, and the other end of the spring is fixedly connected with the bottom of the wedge-shaped block; the wedge surface of the wedge block is back to the side surface of the groove body; the wedge-shaped block is also provided with a limit groove for positioning the lock catch; under the natural state of the spring, the wedge-shaped block protrudes out of the accommodating groove; when the lock catch is buckled and hung on the lock body through the lock hole, the lock catch continuously slides on the wedge-shaped surface to extrude the wedge-shaped block into the accommodating groove so that the spring is compressed and the lock catch is clamped in the limiting groove when the lock catch is buckled and hung in place.
3. The prefabricated drain of claim 1, wherein: a rubber water stop is arranged on the U-shaped inner side wall of the clamping groove, so that the joint of the two connected groove bodies is sealed through the rubber water stop.
4. The prefabricated drain of claim 1, wherein: the groove cover plate is provided with strip-shaped drain holes along the width direction, and the drain holes are arranged in parallel along the length direction of the groove cover plate at intervals.
5. The prefabricated drain of claim 1, wherein: two sides of the top of the groove body are respectively fixedly and integrally prefabricated and formed with an inverted L-shaped clamping plate, and the clamping plates extend to two ends along the length direction of the groove body; the horizontal parts of the clamping plates on the left side and the right side of the top of the groove body are oppositely arranged, so that the two clamping plates and the horizontal end surface of the top of the groove body jointly form a sliding groove for the sliding of the groove cover plate and the limiting of the groove cover plate; notches matched with the clamping plates in shape are also formed in the two sides of the groove cover plate along the length direction of the groove cover plate, so that the groove cover plate is in sliding fit with the sliding grooves in the top surface of the groove body through the notches, and the horizontal part of the clamping plates vertically limits the groove cover plate; the top surface of the trench cover plate is flush with the top surface of the horizontal part of the clamping plate.
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| CN202021241753.9U CN212612906U (en) | 2020-06-30 | 2020-06-30 | Prefabricated assembled escape canal |
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| CN202021241753.9U CN212612906U (en) | 2020-06-30 | 2020-06-30 | Prefabricated assembled escape canal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113846737A (en) * | 2021-10-22 | 2021-12-28 | 安徽省交通控股集团有限公司 | Basalt fiber composite drainage ditch installation process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113846737A (en) * | 2021-10-22 | 2021-12-28 | 安徽省交通控股集团有限公司 | Basalt fiber composite drainage ditch installation process |
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